Total Synthesis of Islandic Acid I Methyl Ester, Rosellisin and Rosellisin Aldehyde
摘要:
Total synthesis of islandic acid I methyl ester (2), rosellisin (3) and rosellisin aldehyde (4) has been accomplished starting from 4-hydroxy-5-hydroxymethyl-6-methyl-2H-pyran-2-one (9a) via formylation of 9a with dichloromethyl methyl ether and titanium tetrachloride as a key step.
作者:James W. Pavlik、Vuthichai Ervithayasuporn、Supawan Tantayanon
DOI:10.1002/jhet.562
日期:2011.5
AbstractSynthetic methods have been developed to prepare pyrano[2,3‐c]pyrazoles with various substituents at ring positions 1, 3, and 6. The 1H‐ and 13C‐NMR properties of these products and their precursors are presented and discussed. J. Heterocyclic Chem., (2011).